<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h3>第一种</h3>
<form action="/param1">
    <input type="text" name="info">
    <input type="submit">
</form>
<h3>第二种</h3>
<form action="/param2">
    <input type="text" name="name" placeholder="姓名">
    <input type="text" name="age" placeholder="年龄">
    <input type="submit">
</form>
<h3>第三种</h3>
<form action="/param3">
    <input type="text" name="username" placeholder="姓名">
    <input type="text" name="password" placeholder="密码">
    <input type="text" name="nick" placeholder="昵称">
    <input type="submit" value="注册">
</form>
</body>
</html>